O-1954-476 - Laserfiche WebLink

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e' '~ '" .~ , ,.!!!:" .' . -39- SECTION 32. PROTl~TI ON OF EXTERIOR OPENnms. Every bUilcling" e:ccept dwellings, churches" buildings of wood frame I~onstruction and of unprotec:tcd metal construction, and open at r parld.ng garages :shall have approved fire vlindOW's or other approved protectives, in every opening in the exterior vTalls when e:uch opening faces on a street and is less than 30 feet from the opposite building line, or 'When such opening is less than 30 feet distant jJl a direct unobstructed line from an opening in en other bUilding, or when such opening is above and not more than 30 feet distant from any part of a neighboring l"oof of combustible construction, or any roof' having openings ,rlthin this distance; provided that 51 ch protectio::J. shall not be required for show windOW's facing on a street which do not extend a':>ove the first full story above grade; and provided further that such protection shall not be required when the opening to be pro- tected and the opening againnt vhich it is to be protected are situated in walls in the same plane or in para.:.1el planes and are facing in the same direction. SECTION 33. SHAFT~:. 1. Protection required. (a) Every series cf openings above one another in two or more success- ive floors or noors and roof, hereafter placed or constructed in a building or he!I'eafter enlarged or altered to change the use of the shaft, shall be so protected as to prevent fire in any story from communicating to any other story; provided that in buildings of heavy timber construction there shall be no floor open:i..ng that is not protected as pres ::ribed in this section or in some other approved manner . (b) The provisions of this section shall apply to all shafts used for ventilation" light, elevator, pipes, or other purpose; except stairways" air ducts, indnerator flues, shafts in buildings of "ood frame construction, shafts in dwell- ". ings, and ramps in garages eJCeanpted by Secti on 40-6. 2. SH.U'T ENCLQSUR~i. The enclosing walls of shafts in residence build- ings of ordinary construction or noncombustible construction or unprotected metal construction shaD. have a fire resistance rating of not less than 1 hour. The en... clc1sing VlaJ..lS of shafts in other buildings shall be noncombustible construction having a j:ire resistance rating of not less than 2 hours. 3. OPENINGS. Shaft enclosures shall have no openings other than those nec,essary for the purpose of the shaft; provided that in elevator shafts there shall be at least one door in every 30 feet of the height of Slch shaft. Such openings shall be protected with approv3d fire doors, approved fire shutters or approved fire v1indOll'[s.